Periscope STEM Project Worksheet

Science experiments lesson 28: Mirror periscope · Set 230 · 40 questions

What you do (Bounce, bounce, see): 1. An adult cuts a window near the top on one side of the carton and near the bottom on the other. 2. Tape one mirror at 45° behind each window, the two mirrors facing each other. 3. Look into the bottom window and adjust the mirrors until the view is clear. 4. Peep over a table or wall — never point it at the Sun.

1. 1.🛟 Which mirrors are safest for a children’s periscope? (a) big wall mirrors (b) broken glass bits (c) loose glass panes (d) plastic safety mirrors
2. 2.🔭 How many mirrors does a simple periscope use?
3. 3.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the same carton”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is the one thing we change? (a) the object we look at (b) the same carton (c) the same mirrors (d) the angle of the mirrors
5. 5.🧺 Do we need a pencil for the periscope? (a) needed (b) not needed
6. 6.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same carton is the one thing we change. (a) False (b) True
7. 7.🔭 Which of these reflects light well? (a) a mirror (b) a dull brick (c) black cloth (d) a rough wooden board
8. 8.🔭 Does a mirror reflect light well or poorly? (a) reflects light well (b) reflects light poorly
9. 9.True or false: still clear water reflects light poorly. (a) True (b) False
10. 10.True or false: dark soil reflects light well. (a) True (b) False
11. 11.🧺 Do we need a magnet for the periscope? (a) needed (b) not needed
12. 12.🔭 How many times does light bounce off a mirror in a simple periscope?
13. 13.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is kept the same? (a) the angle of the mirrors (b) how clear the view is (c) the same carton
14. 14.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the same light is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — does the angle of the mirrors change how clearly you see? Which of these is what we measure? (a) how clear the view is (b) the same carton (c) the angle of the mirrors (d) the object we look at
16. 16.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) sticky tape (b) a pencil (c) vinegar (d) two small mirrors
17. 17.🔭 What does a periscope let you do? (a) hear far sounds (b) see in the dark (c) see germs (d) see over a wall
18. 18.🔭 Does dark soil reflect light well or poorly? (a) reflects light poorly (b) reflects light well
19. 19.⚖️ Fair test — does the angle of the mirrors change how clearly you see? What do we do with “the angle of the mirrors”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: a mirror reflects light poorly. (a) False (b) True
21. 21.🔮 Predict: you make the periscope tube twice as tall. You can see over ___. (a) nothing at all (b) the ground (c) taller walls (d) only short walls
22. 22.🔭 Why must the two mirrors face each other and be parallel? (a) so it can float (b) so light reaches the eye (c) to make it heavy (d) so it looks shiny
23. 23.🔍 Which is the odd one out? (a) a dull brick (b) dark soil (c) black cloth (d) aluminium foil
24. 24.True or false: sticky tape is needed for the periscope. (a) False (b) True
25. 25.📘 Light bouncing off a mirror is called ___. (a) reflection (b) evaporation (c) refraction (d) magnetism
26. 26.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) yeast (b) sticky tape (c) two small mirrors (d) an empty juice carton
27. 27.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a ruler (b) a pencil (c) a magnet (d) an empty juice carton
28. 28.🔭 Which of these reflects light well? (a) dark soil (b) a dull brick (c) black cloth (d) a shiny steel plate
29. 29.⚖️ Fair test — does the angle of the mirrors change how clearly you see? True or false: the angle of the mirrors is what we measure. (a) False (b) True
30. 30.🧺 Three of these are needed for the periscope. Which one is NOT needed? (a) a balloon (b) sticky tape (c) a pencil (d) a ruler
31. 31.🔍 Which is the odd one out? (a) a dull brick (b) a mirror (c) a shiny steel plate (d) still clear water
32. 32.🔭 Which of these reflects light well? (a) black cloth (b) a dull brick (c) aluminium foil (d) dark soil
33. 33.🛟 You must never point a periscope or a mirror at ___. (a) a tree (b) a wall (c) the Sun (d) a friend’s toy
34. 34.🔍 Which is the odd one out? (a) a shiny steel plate (b) a mirror (c) still clear water (d) dark soil
35. 35.🔭 Who uses a periscope to look above the water? (a) a pilot in a plane (b) a submarine crew (c) a farmer (d) a baker
36. 36.True or false: yeast is not needed for the periscope. (a) False (b) True
37. 37.True or false: yeast is needed for the periscope. (a) False (b) True
38. 38.True or false: an empty juice carton is not needed for the periscope. (a) True (b) False
39. 39.🔭 Does a rough wooden board reflect light well or poorly? (a) reflects light well (b) reflects light poorly
40. 40.🧺 Which of these is not needed for the periscope? (a) an empty juice carton (b) a pencil (c) turmeric powder (d) two small mirrors

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